/*
 * This file is part of the OWL API.
 *
 * The contents of this file are subject to the LGPL License, Version 3.0.
 *
 * Copyright (C) 2011, The University of Manchester
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see http://www.gnu.org/licenses/.
 *
 *
 * Alternatively, the contents of this file may be used under the terms of the Apache License, Version 2.0
 * in which case, the provisions of the Apache License Version 2.0 are applicable instead of those above.
 *
 * Copyright 2011, University of Manchester
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.semanticweb.owlapi.api.test.anonymous;

import static org.semanticweb.owlapi.apibinding.OWLFunctionalSyntaxFactory.*;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.semanticweb.owlapi.model.OWLAnonymousIndividual;
import org.semanticweb.owlapi.model.OWLAxiom;
import org.semanticweb.owlapi.model.OWLDataFactory;
import org.semanticweb.owlapi.util.OWLObjectDuplicator;

/** Author: Matthew Horridge<br>
 * The University of Manchester<br>
 * Information Management Group<br>
 * Date: 02-Jul-2009 */
@SuppressWarnings("javadoc")
public class AnonymousIndividualsNormaliser extends OWLObjectDuplicator {
    private final Map<OWLAnonymousIndividual, OWLAnonymousIndividual> renamingMap = new HashMap<OWLAnonymousIndividual, OWLAnonymousIndividual>();
    private int counter = 0;

    /** Creates an object duplicator that duplicates objects using the specified
     * data factory.
     * 
     * @param dataFactory
     *            The data factory to be used for the duplication. */
    public AnonymousIndividualsNormaliser(OWLDataFactory dataFactory) {
        super(dataFactory);
    }

    public Set<OWLAxiom> getNormalisedAxioms(Set<OWLAxiom> axioms) {
        List<OWLAxiom> axiomsList = new ArrayList<OWLAxiom>(axioms);
        Collections.sort(axiomsList);
        Set<OWLAxiom> normalised = new HashSet<OWLAxiom>();
        for (OWLAxiom ax : axiomsList) {
            OWLAxiom dup = duplicateObject(ax);
            normalised.add(dup);
        }
        return normalised;
    }

    @Override
    public void visit(OWLAnonymousIndividual individual) {
        OWLAnonymousIndividual ind = renamingMap.get(individual);
        if (ind == null) {
            counter++;
            ind = AnonymousIndividual("anon-ind-" + counter);
            renamingMap.put(individual, ind);
        }
        setLastObject(ind);
    }
}
